Hebei Jinghangyu Valve Manufacturing Co.,Ltd

Ductile Iron Double Orifice Automatic Air Release Valve Product Description Size: 1½" - 12" (DN40 - DN300) Standard: DIN / BS / ANSI / Korean Pressure: PN10, PN16, PN25 Coating: WRAS approved epoxy powder at 300 micron thick Media: Water Certificate: ISO, SGS, CE What is Double Orifice Air Valve ? The Dual Orifice Air Valve is an innovative combination of a small and large orifice air valve in a compact cylindrical housing. The function of the large holes is to allow a large amount of air to enter during the duct discharge phase and to expel a large amount of air during system filling. Under operating conditions, any small air accumulations are expelled through the small holes. The novel design has corrosion-inhibiting components acting through the center shaft and reduced weight compared to the comparative unit. Application of Double Orifice Air Valve Used to prevent pressure build-up in piping systems, vacuum and control gas emissions for stability. Suitable for potable and

GGG50 Ductile Iron Rubber Flap Flange Check valve Check valve Description Size: 1½" - 48" (DN40 - DN1200) Standard: DIN/BS/ANSI/Korean Structure: Check Pressure: PN10, PN16, PN25 Coating: WRAS approved epoxy powder at 300 micron thick Media: Water Certificate: ISO, SGS, CE Name Material Body   Ductile iron, epoxy spray coating     Cover Ductile iron  Seat EPDM Rubber Bolt Iron or stainless steel Features: Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, many check valves are very small, simple, and/or cheap. Check valves work  automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most

Ductile Iron Cast Iron Worm Gear Double Flange Butterfly Valve Butterfly Valve Description Size: 1½" - 48" (DN40 - DN1200) Standard: DIN/BS/ANSI/Korean Structure: Butterfly Pressure: PN10,PN16, PN25 Coating: WRAS approved epoxy powder at 300 micron thick Media: Water Certificate: ISO, SGS, CE Name Material Body CI, DI, WCB, CF8,CF8M... Stem Carbon steel with galvanization, SS420, SS304, SS3316 Disc DI, CF8, CF8M, C95400 handle Iron or aluminum Seat EPDM, NBR, VITON,SILICON,PTFE Double Flange Butterfly Valve   Features : 1. Small in size and light in weight and easy to maintain. 2. Simple and compact structure, can be in quick 90 degree on-off operation. 3. Disc has two-way bearing, perfect seal, without leakage under the pressure test. 4. Center plate structure, small torque of open and close Advantages: 1. Precision casting made by self-owned foundry with three advanced casting production lines. 2. Visualization production. From the castings, the polishing, the machining, th